Multi-travel switch synchronizing device

Abstract

The utility model relates to a multi-travel switch synchronizing device which comprises an integrated deflector rod, a limiting support, a limiting adjusting block, a position output adjusting block and a balance spring. The limiting support comprises a left limiting plate and a right limiting plate which are oppositely arranged, and the lower ends of the two limiting plates are detachably installed at the two ends of the valve body rotating shaft. A strip-shaped bolt hole is formed in the upper end of the limiting plate, and the integrated deflector rod is fixed in the strip-shaped bolt hole through a deflector rod fixing bolt; the integrated driving lever can move up and down in the strip-shaped bolt hole; a plurality of position output adjusting blocks which are detachably installed are further arranged on the valve body rotating shaft between the two limiting plates, a plurality of limiting adjusting blocks which are detachably installed are arranged at the corresponding positions of the integrated shifting rod above the valve body rotating shaft, and balance springs are connected between the limiting adjusting blocks and the position output adjusting blocks. According to the utility model, the multi-travel switch can be simultaneously in place.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, in particular to a multi-stroke switch synchronization device. Background Art

[0002] At present, in large industrial facilities, the valve actuator feedback device is composed of multiple travel switches. Each travel switch consists of a contact and a crank arm. The crank arm is moved by an external lever, so that the crank arm is moved by external force, driving the internal contacts to connect and close, so as to transmit feedback signals such as valve opening and position. When the external force disappears, the crank arm automatically rebounds and the contact is disconnected. Multiple travel switches are used to accurately measure the valve opening, position, etc. to ensure the precision of the equipment and its safe operation.

[0003] In the prior art, multiple single levers are usually used, that is, one lever corresponds to one travel switch, to move the crank arms of multiple travel switches; but when the single lever corresponding to a toggle travel switch crank arm is offset laterally or longitudinally, the corresponding travel switch may not be actuated because the contact position between the lever and the travel switch crank arm is not good, or the crank arm is not pushed a sufficient distance.

[0004] Since the logic of the valve being in place requires that all travel switches are in place at the same time, the in-place signal can be fed back. If there is a travel switch that does not operate normally, the in-place signal cannot be fed back.

[0005] To sum up, affected by the actual working conditions of the equipment, during the debugging or operation of the valve actuator, the lever often fails to contact the arm of one of the multiple travel switches of the valve actuator feedback device, and the actual opening and position information cannot be fed back, resulting in the inability to truly reflect the valve opening and position, affecting the next logical judgment, which will cause unstable operating conditions and bring huge safety hazards to the operation of the equipment.

[0006] Therefore, how to ensure that the lever does not deviate laterally or longitudinally and achieve simultaneous positioning of multiple travel switches to ensure stable operating conditions is a technical problem that urgently needs to be solved.

[0007] After searching, no public documents of the prior art that are identical or similar to the present utility model were found. Utility Model Content

[0008] The purpose of the utility model is to overcome the deficiencies of the prior art and to propose a multi-stroke switch synchronization device that can keep the lever balanced without causing horizontal or vertical deviation, and can make the multi-stroke switches in place at the same time, thereby providing true feedback of valve opening and position signals.

[0009] The utility model solves the practical problem by adopting the following technical solutions:

[0010] A multi-stroke switch synchronization device comprises: an integrated shifting rod, a limit bracket, a limit adjustment block, a position output adjustment block and a balance spring; the limit bracket comprises two left and right limit plates arranged opposite to each other, and the lower ends of the two limit plates are detachably mounted on the two ends of the valve body rotating shaft; a strip bolt hole is formed at the upper end of the limit plate, and the integrated shifting rod is fixed in the strip bolt hole by a shifting rod fixing bolt; the integrated shifting rod can move up and down in the strip bolt hole; a plurality of detachably mounted position output adjustment blocks are also arranged on the valve body rotating shaft between the two limit plates, and a plurality of detachably mounted limit adjustment blocks are arranged at corresponding positions on the integrated shifting rod above the limit plates, and a balance spring is connected between the limit adjustment block and the position output adjustment block.

[0011] Moreover, the lower ends of the two limit plates are detachably mounted on the two ends of the valve body rotating shaft through two position output adjustment blocks respectively.

[0012] Moreover, the limit adjustment block includes: a clamp, which is sleeved on the integrated shift rod, and a limit adjustment block fixing screw hole is formed on the clamp on both sides of the shift rod, and fixing screws are respectively passed through the limit adjustment block fixing screw holes on both sides of the clamp to tighten and fix the clamp and the integrated shift rod.

[0013] Moreover, the limit adjustment block is also connected to a limit adjustment block boss for installing a balancing spring, and the position output adjustment block is connected to a position output adjustment block boss for installing a balancing spring. One end of the balancing spring is sleeved on the limit adjustment block boss, and the other end is sleeved on the position output adjustment block boss on the corresponding side. When the valve body shaft rotates, the integrated lever is driven to rotate.

[0014] Moreover, the position output adjustment block has the same structure as the limit adjustment block.

[0015] Advantages and beneficial effects of the utility model:

[0016] 1. The utility model proposes a multi-stroke switch synchronization device, which achieves the goal of having multiple stroke switches in place at the same time through the cooperation of an integrated lever, a limit bracket, a limit adjustment block on the integrated lever, a position output adjustment block on the valve shaft, and a balance spring connected between the limit adjustment block and the position output block. The lever is made into an integrated structure, and when the integrated lever moves with the rotation of the valve shaft, the integrated lever can simultaneously shift multiple stroke switches, so that the contact between the integrated lever and the crank arms of the multiple stroke switches is synchronized. In addition, in order to overcome the problem of poor contact when a toggle lever of a toggle travel switch arm is offset horizontally or vertically, the toggle lever is made into an integrated structure, and the toggle lever is fixed in the strip bolt holes at both ends of the limit bracket to effectively limit the lateral offset of the integrated toggle lever; in addition, the utility model can also overcome the deviation caused by the longitudinal offset caused by the deformation of the integrated toggle lever. If one side of the integrated toggle lever is bent due to deformation and other reasons and cannot normally toggle the travel switch arm on this side, then when the other side of the integrated toggle lever has toggled other travel switch arms, the deformed side of the integrated toggle lever has not yet contacted the travel switch arm, but because the integrated toggle lever is pressed by the travel switch arm on the other side that has not been deformed, The balance spring is compressed, and the integrated lever on the pressed side moves downward along the strip bolt hole on the limit bracket. At this time, the integrated lever is tilted, and the lever on the side that does not touch the travel switch arm is lifted, thereby ensuring that the contact point between the integrated lever and the arm is always parallel, until the travel switch arm on this side contacts the integrated lever, and then continues to rotate with the valve shaft, so that the integrated lever can move the travel switch arm that has not been contacted before. In other words, even if the integrated lever has a longitudinal offset in the strip bolt hole, the balance spring can automatically adjust the integrated lever to compensate for this deviation, so that multiple travel switches can be in place synchronously, thereby avoiding the problem of valve feedback being affected by a certain travel switch not being in place.

[0017] 2. The utility model proposes a multi-stroke switch synchronization device, wherein the integrated lever is fixed to the two ends of the limit bracket by lever fixing bolts, and the limit bracket includes: two left and right limit plates, and the integrated lever can move up and down in the strip bolt holes on the left and right limit plates; the lower end of the limit bracket is connected to the valve body shaft through a position output adjustment block detachably mounted on both ends of the valve body shaft; a plurality of position output adjustment blocks are also arranged on the valve body shaft between the two limit plates, and a plurality of detachably mounted limit adjustment blocks are arranged at corresponding positions on the lever on the opposite side of the plurality of position output adjustment blocks, and a balance spring is connected between the limit adjustment block and the position output adjustment block, and the number and position of the balance spring are adjusted by adjusting the positions of the detachable limit adjustment block and the position output adjustment block to adapt to different numbers of stroke switches, and a balance spring with a suitable elastic coefficient can be selected according to the elastic force of the stroke switch crank arm. The utility model has reasonable design, simple structure, and convenient installation, and the use of the device can enhance the stability of equipment operation.

[0018] 3. During the installation process of the utility model, the lower end of the limit bracket is connected to the two ends of the valve shaft through a detachable position output adjustment block. The position output adjustment block can be installed and fixed at different positions of valve body shafts of different models according to different usage scenarios, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the installation position of the limit adjustment block, the integrated lever and the travel switch arm of the utility model;

[0021] Figure 3 It is a schematic diagram of the use state of the utility model.

[0022] Description of reference numerals:

[0023] 1.1, 1.2- lever fixing bolt, 1.3, 1.4- strip bolt hole, 1.5- integrated lever, 1.6, 1.7, 1.8- limit adjustment block, 1.9, 1.10, 1.11- balance spring, 1.12, 1.13, 1.14, 1.15, 1.16- position output adjustment block, 1.17, 1.18, 1.19- limit adjustment block boss, 1.20, 1.21, 1.22- position output adjustment block boss; 2.1, 2.2- fixing screw, 2.3, 2.4- limit adjustment block fixing screw hole, 2.5, 3.1, 3.2- travel switch crank arm. DETAILED DESCRIPTION

[0024] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0025] A multi-travel switch synchronization device, such as Figures 1 to 3 As shown, it includes: an integrated shifting rod, a limit bracket, a limit adjustment block, a position output adjustment block and a balance spring; the limit bracket includes two relatively arranged left and right limit plates, and the lower ends of the two limit plates are detachably mounted on the two ends of the valve body rotating shaft; the upper ends of the limit plates are formed with strip bolt holes, and the integrated shifting rod is fixed in the strip bolt holes by means of shifting rod fixing bolts; the integrated shifting rod can move up and down in the strip bolt holes; a plurality of detachably mounted position output adjustment blocks are also arranged on the valve body rotating shaft between the two limit plates, and a plurality of detachably mounted limit adjustment blocks are arranged at corresponding positions on the integrated shifting rod above the limit plates, a balance spring is connected between the limit adjustment block and the position output adjustment block, and the position of the balance spring can be adjusted by adjusting the installation positions of the detachable limit adjustment block and the position output adjustment block.

[0026] In this embodiment, the lower ends of the two limit plates are detachably mounted on the two ends of the valve body rotating shaft through two position output adjustment blocks respectively.

[0027] In this embodiment, if Figure 2 As shown, the limit adjustment block includes: a clamp, which is sleeved on the integrated shifting rod, and a limit adjustment block fixing screw hole is formed on the clamp on both sides of the shifting rod, and fixing screws are respectively passed through the limit adjustment block fixing screw holes on both sides of the clamp, so that the clamp and the integrated shifting rod are tightened and fixed, thereby fixing the limit adjustment block on the integrated shifting rod.

[0028] In this embodiment, the limit adjustment block is also connected to a limit adjustment block boss for installing a balancing spring, and the position output adjustment block is connected to a position output adjustment block boss for installing a balancing spring. One end of the balancing spring is sleeved on the limit adjustment block boss, and the other end is sleeved on the position output adjustment block boss on the corresponding side. When the valve body shaft rotates, it drives the integrated lever to rotate, thereby causing the integrated lever to toggle the crank arm of the travel switch.

[0029] In this embodiment, the position output adjustment block and the limit adjustment block have the same structure.

[0030] The installation process of the utility model is:

[0031] Install the limit adjustment block and position output adjustment on the integrated lever and valve shaft respectively, adjust until the upper and lower positions of the limit adjustment block bosses correspond, and fix them with fixing screws. Insert the integrated lever into the strip bolt hole, and fix it with lever fixing bolts on both sides. Slide the compressed balance springs into the limit adjustment block bosses. At this time, under the elastic force of the balance spring, the integrated lever is pushed to the top of the strip bolt hole. If the integrated lever is pressed by hand, it can be pressed to the bottom of the strip bolt hole, which proves that the device is in good condition and the installation is complete.

[0032] The working process of the utility model is as follows: the bottom end of the limit bracket of the overall device is connected to the valve shaft. When the valve shaft rotates, the integrated lever of the overall device is driven to move. When the integrated lever contacts the travel switch arm, the integrated lever is pressed to the bottom of the strip bolt hole by the travel switch arm, and the balance spring is tightened. The integrated lever continues to move with the shaft body, and the travel switch arm is moved until the action is completed.

[0033] The working principle of the utility model is as follows: the device limits the integrated lever in the strip bolt hole to ensure that the integrated lever and the valve shaft are in a parallel relationship on the same plane without lateral offset, and can ensure that the entire lever contacts the travel switch crank arm at the same time. When the integrated lever is deformed and one side is bent and longitudinally offset, the existence of the balance spring will eliminate the influence of this offset. If one side of the integrated lever contacts the travel switch crank arm first, during the action of moving the travel switch crank arm, this side of the integrated lever will be squeezed by the travel switch crank arm to make the balance spring pressed, and the other side of the integrated lever that has not contacted the travel switch crank arm before will be relatively lifted until it contacts the travel switch crank arm, so that the integrated lever simultaneously swings multiple travel switch crank arms, so that they act synchronously, and the purpose of synchronizing multiple travel switches in place is achieved.

[0034] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention includes but is not limited to the embodiments described in the specific implementation manner. Any other implementation manners derived by those skilled in the art based on the technical solution of the present invention also fall within the scope of protection of the present invention.

Claims

1. A multi-travel switch synchronization device, characterized in that: include: An integrated shifting rod, a limit bracket, a limit adjustment block, a position output adjustment block and a balance spring; the limit bracket comprises two relatively arranged left and right limit plates, the lower ends of the two limit plates are detachably mounted on the two ends of the valve body shaft; a strip bolt hole is formed at the upper end of the limit plate, and the integrated shifting rod is fixed in the strip bolt hole by a shifting rod fixing bolt; the integrated shifting rod can move up and down in the strip bolt hole; a plurality of detachably mounted position output adjustment blocks are also arranged on the valve body shaft between the two limit plates, and a plurality of detachably mounted limit adjustment blocks are arranged at corresponding positions on the integrated shifting rod above the limit plates, and a balance spring is connected between the limit adjustment block and the position output adjustment block.

2. A multi-travel switch synchronization device according to claim 1, characterized in that: The lower ends of the two limit plates are detachably mounted on the two ends of the valve body rotating shaft through two position output adjustment blocks respectively.

3. A multi-travel switch synchronization device according to claim 1, characterized in that: The limit adjustment block includes: a clamp, which is sleeved on the integrated shifting rod. A limit adjustment block fixing screw hole is formed on the clamp on both sides of the shifting rod, and fixing screws are respectively passed through the limit adjustment block fixing screw holes on both sides of the clamp to tighten and fix the clamp and the integrated shifting rod.

4. A multi-travel switch synchronization device according to claim 1, characterized in that: The limit adjustment block is also connected to a limit adjustment block boss for installing a balancing spring, and the position output adjustment block is connected to a position output adjustment block boss for installing a balancing spring. One end of the balancing spring is sleeved on the limit adjustment block boss, and the other end is sleeved on the position output adjustment block boss on the corresponding side. When the valve body shaft rotates, the integrated lever is driven to rotate.

5. A multi-travel switch synchronization device according to claim 1, characterized in that: The position output adjustment block has the same structure as the limit adjustment block.

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